|Week|Date|Opponent|Result|Attendance|
|---|---|---|---|---|
|1|September 3, 1978|at New Orleans Saints|L 31–24|54,187|
|2|September 11, 1978|Denver Broncos|W 12–9|46,508|
|3|September 17, 1978|Tampa Bay Buccaneers|L 16–10|46,152|
|4|September 25, 1978|at Chicago Bears|W 24–20|53,551|
|5|October 1, 1978|at Tampa Bay Buccaneers|W 24–7|65,972|
|6|October 8, 1978|at Seattle Seahawks|L 29–28|62,031|
|7|October 15, 1978|Los Angeles Rams|L 34–17|46,551|
|8|October 22, 1978|Green Bay Packers|W 21–7|47,411|
|9|October 26, 1978|at Dallas Cowboys|W 21–10|61,848|
|10|November 5, 1978|Detroit Lions|W 17–7|46,008|
|11|November 12, 1978|Chicago Bears|W 17–14|43,286|
|12|November 19, 1978|San Diego Chargers|L 13–7|38,859|
|13|November 26, 1978|at Green Bay Packers|T 10–10 (OT)|51,737|
|14|December 3, 1978|Philadelphia Eagles|W 28–27|38,722|
|15|December 9, 1978|at Detroit Lions|L 45–14|78,685|
|16|December 17, 1978|at Oakland Raiders|L 27–20|44,643|

Question: how many times did they play an opponent in november?
Answer: 4